The correct answer is C. Eyewitness accounts
Explanation:
A testimony refers to a statement or declaration about events one witnessed or experienced. Testimonies can be written or oral and are essential in law and research because they provide first-hand information about an event. For example, when a crime has occurred testimonies are essential to understand the participants involved, how the crime occurred, why it occurred, etc.
In this context, the evidence that is an example of testimony is an eyewitness account because this evidence is a declaration of an individual who observed or eyewitness an event and therefore can be classified as a testimony.